Hypersonic Reaction Engines A2 Jet Flies At Hypersonic Speeds
British aerospace firm Reaction Engines is currently working on a hypersonic aircraft that would herald a new era and bright future for commercial air travel at Mach 5 speeds.

With 50 per cent funding by the European Union, or about US$14 million, this project, if successfully launched, could slash travel times drastically, so a flight from Brussels to Sydney would take only about a little over four hours.
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